albert



Shee'ts-S-heet 1.. H. ALBERT.

ELEVATR.

(No Model.)

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ELEVATOR.

(Nn Model.)

Patented Jan. 5, 1886.

FlG'. 2.

FIG. 3.

UNITED STATES PATENT CEEICEo HENRY ALBERT, OF CRESCENT CITY, CALIFORNIA..

ELEVATO R.

SPECIFICATION forming part of Letters Patent N o. 333,713, dated January 5, 1886.

Application filed October 27, 1885.

.To all whom t may concern.-

Be it known that I, HENRY ALBERT, of Crescent City, county of Del Norte, and State of California, have invented an Improvement in Elevators; and I hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to the class of elevators and to those appliances or connections by which the cage is -caught and held in case the rope breaks.

My invention consists in peculiar racks in the elevator-shaft, anti-friction guide-wheels on the cage, sliding bolts in said wheels, and mechanism dependent upon and operated by the central spring-actuated spindle, to which the lifting-strain is applied for projecting and retracting the bolts to cause them to engage with or to be disengaged from the racks.

It consists, further, in various details of construction relating to the several parts, and in a peculiar buffer on the bottoni of the cage for the purpose of breaking its fall, if for any cause it should reach the base of the shaft.

The object of my invention is to provide a simple and effective safety-elevator.

Referring to the accompanying drawings, Figure l is a perspective view of my elevator. Fig. 2 is a perspective detail of the safety mechanism. Fig. 3 is a horizontal section through the rack and the wheel E, showing the interior mechanism, and also the bolts G, as adjustable in the heads F. Fig. 4 is a vertical section of the wheel E, showing the bolts rigid in the heads. Fig. 5 is a detail of the buffers R.

A is the elevator shaft or well, in the sides of which are formed grooved or slotted ways a, provided with transverse cross-pins a', said Ways and pins forming vertical racks.

B is the cage, having in its top a verticallysliding spindle, b, which is iniiuenced by an elliptical spring, b. To the upper endv of the spindle is secured the suspending cord or rope C. On the top of the cage are bearings or standards D, in which are mounted the axles e ofthe anti-friction rollers or wheels E,which are adapted to travel against the wall of the elevator-shaft between its racks. These rollers or wheels are made hollow, and their journals or axles are also made hollow or tubular,

Serial No. 181,106. (No model.)

Figs. 3 and 4. Within the wheels are the K with the lower end of the spring-actuated spindle b, by which the cage is suspended, while their outer ends are connected with the pivoted levers I. Springs L bear against the blocks or studs, and serve to force them in.

The operation, as far as explained, is as follows: Vhen the lifting or supporting strain is applied to the spindle Z, it draws said spindle up against its spring b', thus forcing outwardly the studs or blocks J, and through the pivoted levers I causing the rods H, which pass through the hollow journals e of the Wheels, to force inwardly the heads F within said wheels, thus retracting the bolts G, so that they are out of the way within the wheels. As long as this lifting-strain remains the bolts lie within the Wheels, but as soon as the strain is relieved-as by the breaking of the supporting cable or rope*the spring of the spindle b forces said spindle down, thusdraW- ing in the blocks or studs J, which movement is assisted by their own springs L. rIhe rods H are thus drawn outwardly, which draw on the heads F within the wheels, and project the bolts G, some of which, inthe revolution of the anti-friction wheels against the walls of the shaft, will engage with the cross-pins a of the racks, and thus hold the cage. These bolts not only act in the capacity 0l' stops, but also as cliokes or brakes, for it will be seen that as the cage descends too rapidly several of the projected bolts in the sides of the rotating rollers will bind against the surfaces of both Walls of the grooved rackways, and thus check or brake the cage until the engagement of the bolts with the cross-pins is effected.

In order to prevent any of the bolts from IOC striking squarely' against the edge of the inner wall of the grooved way, and thus prevent the full operation of the mechanism, I bevel down this edge of the inner wall, as shown at m, and I also make the points of the bolts on a bevel, Fig. 3; but to entirely obviate any danger of this kind I may have the following mechanism:

By referring to Fig. 3 it will be seen that the bolts G pass loosely through the heads F, and are themselves provided with heads g, which keep them in their seats, while still allowing them a certain movement of their own independent of the heads F. Springs N bear on the heads g of the bolts. Now, if any one of the bolts should come in contact squarely with the edge of the grooved way, it could yield against its spring, and not prevent the proper movement ofthe remainder ofthe bolts; but, ordinarily, it may be found practical for all purposes to secure the bolts rigidly to the heads.

On the bottom ofthe cage are two anti-friction rollers or wheels,O, which simply serve as guides for the cage. To the bottom of the cage are bolted the pieces Q, which are hollowed out or socketed to receive the stems r of the rubber buffers B, Figs. l, 5. XVithin the sockets of pieces Q are springs S, against which the ends ofthe stems of vthe buffers bear. This mechanism is to relieve the jar, or break the fall of the cage, should it by any chance reach the bottom.

In order to provide for an accurate lineal movement of the rods H, it is necessary that the connection between their outer ends and the ends of the pivoted levers I should be a movable or adjustable one. This may be accomplished by means of the sliding and swiveling bearings T, in a groove in the levers I, and to which the rods H are connected, Fig. 2, or it may be done by simply slotting the levers over the rods, and confining the latter by two heads or collars, as shown in Fig. 3.

It is obvious that I might duplicate the safety appliance in the lower rollers and make the same suspending-spindle operate them.

VHaving thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In an elevator, the combination of racks in the shaft with anti-friction rollers or wheels on'the cage traveling in the shaft, and sliding bolts in the rollers or wheels adapted to be projected within the racks when the supporting-strain on the cage is relieved, and to be retracted when the strain is applied, substantially as described.

2. In an elevator, the combination of racks in the shaft with anti-friction rollers or wheels on the cage traveling in the shaft, sliding bolts in the rollers or wheels, a yielding springspindle on the cage, to which the lifting or supporting strain is applied, and mechanism connecting the spindle with the bolts, whereby when the strain on said spindle is relieved the bolts are projected to engage the racks, and when the strain is again applied to the spindie the bolts are retracted, substantially as described.

3. In an elevator, the shaft A, having the grooved or slotted ways a in its sides, with cross-pins a', forming racks, in combination with the cage B, having the anti-friction rollers or wheels E in the sides of itstop traveling against the walls of the shaft between the racks, and the sliding bolts G in the rollers or wheels adapted to be projected through their sides to engage with the racks when the supporting-strain on the cage is relieved, and to be retracted into the rollers or wheels when the strain is applied, substantially as described.

et. In an elevator, the shaft A, having the grooved or slotted ways a in its sides, with cross-pins a', forming racks, in combination with the cage B, having the anti-friction rollers or wheels E in the sides of its top traveling against the walls of the shaft between the racks,the sliding bolts G in said rollers or wheels, the sliding spring-actuated spindle b in the top of the cage, to which the supporting or lifting strain is applied, and connecting mechanism between the spindle and the bolts, whereby the latter are projected and retracted to engage with or to be disengaged from the racks according as the strain is relieved or applied, substantially as described.

5. In an elevator, the vertical racks in the elevator-shaft, consisting of the grooved ways a and cross-pins a', the innermost edge of the ways being beveled, in combination with the rollers or wheels E of the cage, having sliding bolts G, adapted to be projected and retracted, as described, said bolts having beveled points, substantially as and for the purpose herein described.

6. In an elevator, the hollow anti-friction rollers or wheels E on the reciprocating cage having hollow journals or aXles e, by which they are mounted, in combination with the sliding heads F in the wheels, the rack-engaging bolts G, attached thereto 'and projecting through the sides of the rollers or wheels, the rods H, passing through the hollow journals e and connected with the heads F, and a mechanism for reciprocating said rods, substantially as herein described.

7. In an elevator, the hollow anti-friction rollers or wheels E on the reciprocating cage having hollow journals or axles e, by which they are mounted, in combination with the sliding heads F in the wheels, the rack-engaging bolts G, projecting through the sides of the wheels and headed loosely in the heads, the adjusting-springs N, pressing on the heads of the bolts, the rods H, passing through the hollow journals e and connected with the heads F, and a mechanism for reciprocating said rods, substantially as herein described.

8. The hollow anti-friction rollers E of the elevator-cage, in combination with the heads F within the rollers, the sliding bolts G, pass- IOO IIO

ing through the sides of the rollers and loosely headed on the heads F, and the springs N, pressing on the heads of the'bolts, subst-antially as herein described.

9. In an elevator, the cage B and the slid` ing spring-actuated spindle b, by which it is suspended, in combination with the hollow anti-friction rollers or wheels E, having hollow journals or axles e, by which they are mounted in the cage, the sliding heads F within the rollers, the bolts G, carried thereby and adapted, when projected, to engage racks in the elevatorshaft, the rods H, passing through the hollow journals e and connected with the heads, the pivoted levers I, connected with said rods, the sliding blocks or studs J, connected with the levers, the links or toggles K, connecting the spindle and the sliding blocks, and the springs L, bearing againstsaid blocks, substantially as herein described.

10. In an elevator, the shaft A, having the grooved ways a, with cross-pins a', forming racks, and the cage B, having a spring-actuated spindle, b, by which it is suspended, in combination with the hollow anti-friction wheels or rollers E, having hollow journals or axles e, by which they are mounted on the cage, the sliding heads F within the rollers, the adjust-able bolts G, carried by the heads and adapted to engagethe racks, the rods H,

passing through the hollow journals e and connected with the heads F, the pivoted levers I,

connected with the rods, the sliding blocks or l studs J, connected with the levers, the toggles or links K, connecting the spindle with the sliding blocks, and the springs L, bearing against said blocks, substantially as herein described.

11. In an elevator, the hollow wheels or rollers E on the cage having the hollow axles or journals e, and the heads F, with the rack-engaging bolts G, operating as described, in com bination with the rods H, passing through the hollow axles, the pivoted levers I, operated as described, and a sliding or movable pivot-connection between the levers and rods, by which the latter are moved in a straight line, substantially as described.

12. The bolt-operating rods H and the pivoted levers I, in combination with the bearings T, pivoted and sliding in grooves in the end of the levers and connected with the rods H, substantially as described.

In witness whereof I have hereunto set my hand.

HENRY ALBERT.

Witnesses:

JOSEPH G. WALL, W. T. LIVINGSTON. 

